CN107387032B

CN107387032B - Gear type twin-well oil pumping unit

Info

Publication number: CN107387032B
Application number: CN201710736911.4A
Authority: CN
Inventors: 邵军; 陈瑞泽; 彭勇; 张亮亮
Original assignee: Xian Shiyou University
Current assignee: Xian Shiyou University
Priority date: 2017-08-24
Filing date: 2017-08-24
Publication date: 2023-02-28
Anticipated expiration: 2037-08-24
Also published as: CN107387032A

Abstract

A gear type twin-well pumping unit comprises a frame, wherein the frame comprises an upper layer surface and a lower layer surface, two opposite surfaces of the upper layer surface and the lower layer surface are respectively provided with a groove, a transverse moving frame is embedded between the upper groove and the lower groove, long arms at two sides of the transverse moving frame are connected with steel wire ropes, and the steel wire ropes are connected with an oil well pump through a roller; a vertical moving frame capable of moving up and down is embedded in the transverse moving frame, a track groove with a rectangular middle part and semicircular two ends is arranged on the vertical moving frame, and an annular rack parallel to the track groove is fixed at the center of the track groove; a motor is fixed on the lower layer surface, the motor is connected with a belt pulley on the speed reducer through a belt, and a gear meshed with the annular rack is installed on an output shaft of the speed reducer; the invention has large torque and high transmission efficiency, can realize single well operation, does not influence the maintenance of the other well, and can be suitable for the simultaneous oil extraction operation of two oil wells with different well distances.

Description

Gear type twin-well oil pumping unit

Technical Field

The invention relates to an oil pumping unit, in particular to a gear type double-well oil pumping unit.

Background

At present, a beam-pumping unit occupies an absolute domination position in oil extraction in an oil field, and has the main characteristics of simple structure, wide application range, reliability, durability, low manufacturing and maintenance cost and mature technology; but the beam-pumping unit also has the obvious defects of large volume, low system efficiency and high energy consumption. In recent years, various new walking beam type machines are developed, the defects are relieved to a certain extent, the electric energy utilization rate and the load lifting capacity are improved, but the balance effect is not improved fundamentally, the acceleration is high, the load is large, the effective load utilization degree is reduced, and the service life of the oil pumping unit is prolonged.

With the continuous increase of oil field encrypted wells and cluster wells, in order to save energy, reduce consumption and improve the efficiency of the pumping unit, part of double-well pumping units are also developed successively, such as the conventional crank bidirectional balance beam type double-mule-head double-well pumping unit in Jilin oil fields, and small-batch tests are carried out in the oil fields, but the batch popularization cannot be carried out due to high requirements on well spacing, poor applicability and the like; besides, the problems of different well spacing ranges, different working conditions of two wells, single-well operation and the like also need to be solved.

Disclosure of Invention

In order to solve the problems, the invention aims to provide a gear type twin-well pumping unit which can reduce transmission links, improve transmission efficiency, realize simultaneous production of twin wells and single-well operation and meet requirements of different well distances.

A gear type twin-well pumping unit comprises a frame, wherein the frame comprises an upper layer surface and a lower layer surface, two opposite surfaces of the upper layer surface and the lower layer surface are respectively provided with a groove, the two grooves are positioned in the same vertical plane, a transverse moving frame which only moves in the horizontal direction is embedded between the upper groove and the lower groove, long arms at two sides of the transverse moving frame are connected with steel wire ropes, and the steel wire ropes are connected with an oil well pump of an oil well by bypassing rollers arranged at two sides of the lower layer surface; a vertical moving frame is embedded in the transverse moving frame and can move up and down in the transverse moving frame, a track groove with a rectangular middle part and semicircular two ends is arranged on the vertical moving frame, and an annular rack parallel to the track groove is fixed at the center of the track groove; the lower layer is also fixed with a motor, a power output shaft of the motor is connected with a belt pulley on the speed reducer through a belt, a gear is arranged on the output shaft of the speed reducer, and the gear is meshed with the annular rack.

Furthermore, the upper and lower transverse edges of the transverse moving frame are respectively provided with a transverse limiting wheel matched with the groove.

Furthermore, vertical limiting wheels matched with the transverse moving frame are respectively arranged on the left vertical edge and the right vertical edge of the vertical moving frame.

Furthermore, a guide wheel is further installed on the output shaft of the speed reducer and moves along the track groove to ensure that the gear and the annular rack are always in a meshed state.

Furthermore, a brake device is arranged on the belt pulley.

The invention has the beneficial effects that:

the transmission mode that the annular rack is directly meshed with the gear is adopted, so that the torque is large and the transmission efficiency is high; because the transverse moving frame is used as an intermediate medium and the guide wheel is used for limiting the transmission position, when one well stops working, the other well is not influenced, and single-well working can be realized; when the distance between the two wells is different, the two oil wells with different well distances can be simultaneously used for oil extraction only by changing the length of the lower layer face.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is a schematic view of a lateral motion block;

FIG. 4 is a schematic view of a vertical moving frame;

in the figure: 1. the device comprises a steel wire rope, 2, a roller, 3, a rack, 3a, an upper layer surface, 3b, a lower layer surface, 4, a transverse moving frame, 5, a vertical moving frame, 6, a track groove, 7, an annular rack, 8, a gear, 9, a speed reducer, 10, a belt pulley, 11, a belt, 12, a motor, 13, a speed reducer output shaft, 14, a groove, 15, a transverse limiting wheel, 16 and a vertical limiting wheel.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, a gear type twin-well pumping unit comprises a frame 3, wherein the frame 3 comprises an upper layer surface 3a and a lower layer surface 3b, two opposite surfaces of the upper layer surface 3a and the lower layer surface 3b are respectively provided with a groove 14, the two grooves 14 are positioned in the same vertical plane, a transverse moving frame 4 which only moves in the horizontal direction is embedded between the upper groove 14 and the lower groove 14, the upper transverse edge and the lower transverse edge of the transverse moving frame 4 are respectively provided with a transverse limiting wheel 15 which is matched with the grooves 14 so as to reduce the friction force between the transverse moving frame 4 and the grooves 14, long arms at two sides of the transverse moving frame 4 are connected with steel wire ropes 1, the steel wire ropes 1 are connected with an oil well pump by bypassing rollers 2 arranged at two sides of the lower layer surface 3b, and move left and right in the horizontal direction through the transverse moving frame 4, so as to realize the oil extraction operation of two wells;

as shown in fig. 1 and 4, a vertical moving frame 5 is embedded in the horizontal moving frame 4, the vertical moving frame 5 can move up and down in the horizontal moving frame 4, and vertical limiting wheels 16 matched with the horizontal moving frame 4 are respectively arranged on the left vertical side and the right vertical side of the vertical moving frame 5, so as to reduce the friction force between the vertical moving frame 5 and the horizontal moving frame 4;

as shown in fig. 1, a track groove 6 having a rectangular middle and semicircular ends is formed in the vertical moving frame 5, and an annular rack 7 parallel to the track groove 6 is fixed at the center of the track groove 6; a motor 12 is fixed on the lower layer surface 3b, a power output shaft of the motor 12 is connected with a belt pulley 10 on the speed reducer 9 through a belt 11, and a brake device is also arranged on the belt pulley 10; a gear 8 is arranged on an output shaft 13 of the speed reducer, the gear 8 is meshed with the annular rack 7, and a guide wheel is further arranged on the output shaft 13 of the speed reducer and moves along the track groove 6 to ensure that the gear 8 and the annular rack 7 are always in a meshed state.

The working principle of the invention is as follows:

when the pumping unit works, a motor 12 (taking the motor as an example of anticlockwise rotation) transmits power to a gear 8 through a speed reducer 9, and initially, an annular rack 7 is positioned above the gear 8 and moves to the left under the driving of the gear 8, the annular rack 7 is fixed on a vertical moving frame 5, and the vertical moving frame 5 is embedded in a transverse moving frame 4, so that the transverse moving frame 4 is finally driven to move to the left, a steel wire rope 1 is driven to move to the left, a left oil well is lowered, and a right oil well pumps oil;

when the most protruded part at the right end of the annular rack 7 is in contact with the gear 8, the two parts are at the same height, the annular rack 7 stops moving instantly without being acted by the gear 8, the transverse moving frame 4 reaches the leftmost end, the oil pumping of the right oil well is finished, meanwhile, the vertical moving frame 5 moves downwards along the transverse moving frame 4 under the action of self gravity and the meshing of the gear, the annular rack 7 is transferred to the lower part of the gear 8, the annular rack 7 drives the transverse moving frame 4 to start moving rightwards along with the rotation of the gear 8, the steel wire rope 1 is further driven to transfer rightwards, the left oil well pumps oil, and the right oil well is lowered, and therefore the alternate oil pumping operation of the two wells is finished.

Claims

1. A gear type twin-well pumping unit is characterized in that: the oil well drilling machine comprises a rack (3), wherein the rack (3) comprises an upper layer surface (3 a) and a lower layer surface (3 b), two opposite surfaces of the upper layer surface (3 a) and the lower layer surface (3 b) are respectively provided with a groove (14), the two grooves (14) are positioned in the same vertical plane, a transverse moving frame (4) which only moves in the horizontal direction is embedded between the upper groove (14) and the lower groove (14), long arms on two sides of the transverse moving frame (4) are connected with a steel wire rope (1), and the steel wire rope (1) bypasses rollers (2) on two sides of the lower layer surface (3 b) and is connected with an oil well pump of an oil well; a vertical moving frame (5) is embedded in the transverse moving frame (4), the vertical moving frame (5) can move up and down in the transverse moving frame (4), a track groove (6) which is rectangular in the middle and semicircular at two ends is arranged on the vertical moving frame (5), and an annular rack (7) which is parallel to the track groove (6) is fixed at the center of the track groove (6); a motor (12) is further fixed on the lower layer surface (3 b), a power output shaft of the motor (12) is connected with a belt pulley (10) on a speed reducer (9) through a belt (11), a gear (8) is mounted on an output shaft (13) of the speed reducer, and the gear (8) is meshed with the annular rack (7);

the upper and lower transverse edges of the transverse moving frame (4) are respectively provided with a transverse limiting wheel (15) matched with the groove (14);

and vertical limiting wheels (16) matched with the transverse moving frame (4) are respectively arranged on the left vertical edge and the right vertical edge of the vertical moving frame (5).

2. The gear-type twin-well pumping unit according to claim 1, wherein: and a guide wheel is further mounted on the output shaft (13) of the speed reducer and moves along the track groove (6) to ensure that the gear (8) and the annular rack (7) are always in a meshed state.

3. The gear-type twin-well pumping unit according to claim 1, wherein: a brake device is arranged on the belt pulley (10).